Clevis.



J. W. SWETNAM & G. 0. ELAM.,

GLBVIS.

APPLICATION FILED MAR. 2o, 1909.

Patented Septn 7, 1909.

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'UNITED STATES y PATENT GFFICE.

JOHN W. SWETNAIVI AND CHESTER 0. ELAM, 0E MOUNT STERLING, KENTUCKY.

CLEVIS.

To all whom 'it 'may concern:

Be it known that we, JOHN W. SWETNAM and CHESTER O. ELAM, citizens ofthe United States, residing at Mount Sterling, in the county ofMontgomery and State of Kentucky, have invented certain new and usefulImprovements in Clevises, of which the following is a specification.

This invention relates to improvements in clevises for plows and otherimplements and has for its object to provide means whereby theadjustment of the draft can be made without removing the locking pinfrom the clevis. This object is attained by the means illustrated in theaccompanying drawing in which,

Figure 1 represents a side elevation of our invention, and F ig. Q acentral` horizontal section, showing the plow beam in plan.

Similar numerals of reference denote corresponding parts in the severalviews.

In the drawing the reference numeral 1 denotes the end of a plow beamhaving secured thereto by tie bolts 2, the horizontal toothed segment 3,said segment being provided with the rearwardly extending side pieces 4which engage the sides of the plow beam.

Pivotally mounted upon and straddling the end of the beam 1 isthe'clevis 5, formed of a head 6 and the legs 7, through which and thebeam 1 is passed the vertical pivot bolt 7 said head 6 being providedwith an aperture S on the forward side of which is formed recesses ornotches 9, for adjustably supporting therein the clevis ring 10.

To secure the clevis in position in its lateral adjustment, and theclevis ring in its vertically adjusted position, a pin 11 is provided,which has bearings in `the top and bottom walls of the aperture and issupported by its head 12. This pin 11 is formed of a circular central'portion 13 having wings 14 of less diameter extending from its sides,both of said wings being slotted at 15 near their top ends, and one ofsaid wings having an additional slot 16 just below its center, the saidwings terminating short of the end of the circular portion 13. The slotsin the top and bottom walls of the clevis are formed correspondingly tothe shape of the pin 11.L in cross section, viz., a circular opening 17having side slots 18 for the purpose herein- Specification of LettersPatent.

Application filed March 20,

after specified. A pin 19 in the locking pin 11 limits the upwardmovement of said pin Patented Sept.-7,f 1909.

1909. Serial N0. 484,791.

and prevents its withdrawal from the clevis head.

In operation when it is desired to change the adjustment of the clevis 5or the clevis ring 10, or both, the locking pin 11 is lifted verticallyuntil the pin 19 strikes the upper wall of the aperture 8.l When itreaches this position the slots 15 are central of said upper wall, theslot 16 is central of the toothed segment 8, and the ends of the wings14 are above the lower wall of the aperture 8; the locking pin `11 canvnow be turned in its circular bearings and is supported in its unlockedposition, and the said clevis and clevis ring can be adjusted.

It will be observed that the lock pin 11 cannot move laterally in itsbearing in any of its positions, its central circular portion 13 beingguided and supported at all times in the circular openings 17, but canbe rotated therein. It will be further observed that when the lockingpin 11 is in its locking position, that the wing 14 on one side engagesthe toothed segment 3 to hold it in its adjusted position and the wing14 on the opposite side covers the mouths of the recesses or notches 9,and secures the clevis ring 10 in its position.

Having thus described our invention, what we claim is:

1. A clevis embodying an apertured head, a clevis ring engagingtherewith, a locking pin for the clevis ring, said locking pin having avertical and rotating movement to the unlocking position and means forpreventing the rotating movement until the vertical movement iscompleted.

2. 1n combination with a draft bar, an adjustable clevis embodying anapertured head, an adjustable clevis ring, and a single lock forsecuring the clevis and ring in their adjusted positions, said lockhaving means for supporting it in its unlocked position.

A clevis, an adjustable clevis ring, and a lock for securing the clevisring in its adjusted positions, said lock having means for supporting itand preventing its withdrawal in its unlocked position.

4. 1n combination with a draft bar, an adjustable clevis, and a lock tosecure it in its adjusted positions, said lock having` either position,said lock having a longitudinal and rotating movement.

T. In a clevis, an apertured head, a clevis ring engaging therewith, alocking pin adapted to he shifted longitudinally and to be then rotatedto the unlocking positionl with respect to said clevis ring, and meansfor preventing its rotation until after its longitudinal shift iscompleted.

S. In a clevis, an apertured head, a clevis ring engaging therewith, alocking` pin adaptedto be shifted to the unlocking position with respectto said clevis ring, and means on said pin for supporting it in saidunlocked position said means preventing its rotation when in a lookedposition.

S). In a clevis, an apertured head, a clevis ring engaging therewith, alocking pin adapted to be rotated to the unlocking position, means onsaid pin for supporting it in said unlocked position with respect tosaid clevis ring, and means for preventing lateral movement of said pinin its bearings while being rotated.

10. In a clevis, an apertured head, a clevis ring engaging' therewith, a,locking pin adapted to be shifted longitudinally and 't0 be rotated tothe unlocking position with re- .spect to said clevis ring, means forpreventing its withdrawal :from the head while in 1 its unlockedposition, and means for limiting its longitudinal movement.

ll, .In a clevis, an apertured head, a clevis ring' engaging therewith,and a lockingk pin embodying a circular central portion and side wingsand'adapted to be rotated to an unlocking position with respect to saidclevis ring, said side wings being slotted to allow the pin to rotateand to prevent 'its withdrawal from the head while in said position.

12. A clevis embodying an apertured head, a locking pin journaled insaid head, said pin comprising a central circular portion and side wingsand adapted to be Yshifted vertically to the unlocking position and tobe rotated to an unlocked position, said central circular portionadapted to remain in contact with its bearings and said side wings beingslotted to allow the pin to Y JNO. 7. SVETNAM. @HESITER O. ELAM.

Witnesses J OEL OLDHAM, J. A. HoL'roN.

